| 摘要 |
PURPOSE:To obtain high quality phosphor film which does not show color mixing due to interference of color of light emitted by heating a substrate between the process where tackiness is reproduced by exposing photosensitive tacking layer on the substrate and the process where the phosphor material is supplied. CONSTITUTION:A photosensitive tacking layer 3 is formed at the internal surface 2a of bulb face 2 of substrate. The tackiness is reproduced to the exposing region 4 by exposing the desired region. Next, the photosensitive tacking layer 3 is a little heated from the lower surface of a bulb face 2 and tackiness of unwanted region is eliminated. Thereafter, the phosphor material powder 5 is supplied too the photosensitive tacking layer 3, it is adhered to the exposing region 4, the extra phophor material powder is eliminated and a phosphor material layer 5' corresponding to one color of emitted light. Thereafter, the phosphor material layer of the other colors of emitted light is formed by deviating the exposing region and a light absorbing material layer is formed to each phosphor material layer. This method is suitable for deposition and formation of phosphor film of cathode ray tube. |
